21963700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{487}}^1$

素因数の和:553

約数の個数: 72

約数和(自身を含む): 53371584

約数和(自身を除く): 31407884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 487, 550, 820, 902, 974, 1025, 1100, 1804, 1948, 2050, 2255, 2435, 4100, 4510, 4870, 5357, 9020, 9740, 10714, 11275, 12175, 19967, 21428, 22550, 24350, 26785, 39934, 45100, 48700, 53570, 79868, 99835, 107140, 133925, 199670, 219637, 267850, 399340, 439274, 499175, 535700, 878548, 998350, 1098185, 1996700, 2196370, 4392740, 5490925, 10981850, 21963700]

約数ペア:

[(1, 21963700), (2, 10981850), (4, 5490925), (5, 4392740), (10, 2196370), (11, 1996700), (20, 1098185), (22, 998350), (25, 878548), (41, 535700), (44, 499175), (50, 439274), (55, 399340), (82, 267850), (100, 219637), (110, 199670), (164, 133925), (205, 107140), (220, 99835), (275, 79868), (410, 53570), (451, 48700), (487, 45100), (550, 39934), (820, 26785), (902, 24350), (974, 22550), (1025, 21428), (1100, 19967), (1804, 12175), (1948, 11275), (2050, 10714), (2255, 9740), (2435, 9020), (4100, 5357), (4510, 4870)]